Multivariate Analysis of Water Quality and Plankton Assemblages in an Urban Estuary

Rothenberger, Megan B.; Swaffield, Thomas; Calomeni, Alyssa J.; Cabrey, Carolyn D.

doi:10.1007/s12237-013-9714-0

Cited by 26 publications

(16 citation statements)

References 46 publications

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“…The lower secchi depth of the lake during spring season was mainly due to the transport of sediments from the agricultural land in the watershed [28]. The lower secchi depth indicated higher total suspended solids (TSS) as well as increased in algal blooms [28] [29]. Similar results with low secchi depth were observed in Taudaha Lake [22], and in Beeshazar lake [20] located in western Nepal.…”

Section: Discussionsupporting

confidence: 54%

Investigating Temporal Variation of Water Quality and Benthic Macroinvertebrates in Taudaha Lake, Kathmandu, Nepal

Shrestha¹,

Adhikari²

2016

JWARP

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Taudaha Lake is one of the important wetlands in Nepal, as it provides critical habitats for thousands of migratory birds and fishes. Despite being a critically important water body, there is a lack of detail chemical and biological studies on this lake. The present study investigates the effects of seasonal water quality variations in distribution and abundance of macroinvertebrates in Taudaha Lake, during four different seasons in 2006. The results indicate that all the water quality parameters, except secchi depth, and total alkalinity, significantly varied among seasons. The gross primary productivity of the lake also significantly varied among the seasons, with highest primary production during summer (3.92 ± 0.18 gC/m 3 /day) and lowest during spring (2.44 ± 0.67 gC/m 3 /day). A total of 2166 individual benthic macroinvertebrates from 10 families and 7 orders were collected during the study period. Unlike water quality parameters, the macroinvertebrate species composition did not vary significantly among the seasons. The results suggested that the change in lake water quality did not have significant impacts on community metrics such as species diversity, species richness, and species evenness.

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Section: Discussionsupporting

confidence: 54%

Investigating Temporal Variation of Water Quality and Benthic Macroinvertebrates in Taudaha Lake, Kathmandu, Nepal

Shrestha¹,

Adhikari²

2016

JWARP

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“…Proliferation of the Dinophyceae in higher salinity waters of the GRE and during the warmest period (spring-summer) agrees with results in other estuaries [76, 83]. The low abundance of the Cryptophyceae in the well-mixed GRE contrasts with the high relevance of this class in the stratified waters of the fjordic Loch Linnhe [50] and also with their increased importance associated to salinity and during summer-autumn in the Tagus Estuary [76].…”

Section: Discussionsupporting

confidence: 79%

“…As inferred from FAs in the GRE, the Raphidophyceae was also found to have a minor contribution to phytoplankton community in the Nervion Estuary [73]. Its preferential presence in the higher salinity waters and during the warmest season is consistent with results in other estuaries [83, 85].…”

Section: Discussionsupporting

confidence: 65%

Seston fatty acids to quantify phytoplankton functional groups and their spatiotemporal dynamics in a highly turbid estuary

Cañavate

Bergeijk

González‐Ortegón

et al. 2019

Preprint

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Phytoplankton community composition expresses estuarine functionality and its assessment can be improved by implementing novel quantitative fatty acid based procedures. Fatty acids have similar potential to pigments for quantifying phytoplankton functional groups but have been far less applied. A recently created dataset containing vast information on fatty acids of phytoplankton taxonomic groups was used as reference to quantify phytoplankton functional groups in the yet undescribed Guadalquivir River Estuary. Twelve phytoplankton groups were quantitatively distinguished by iterative matrix factor analysis of seston fatty acid signatures in this turbid estuary. Those phytoplankton groups including species unfeasible for microscopy identification (coccoid or microflagellated cells) could be quantified when using fatty acids. Conducting monthly matrix factor analyses over a period of two years and the full salinity range of the estuary indicated that diatoms dominated about half of the phytoplankton community spatiotemporally. The abundance of Cyanobacteria and Chlorophytes was inversely related to salinity and little affected by seasonality. Euglenophytes were also more abundant at lower salinity, increasing their presence in autumn-winter. Coccolithophores and Dinophytes contributed more to phytoplankton community at higher salinity and remained little affected by seasonality. Multivariate canonical analysis indicated that the structure of the estuarine phytoplankton community was most influenced by salinity, secondly influenced by water temperature, irradiance and river flow, and unaffected by nutrients. Fatty acids are especially suited for phytoplankton community research in high turbid estuaries and generate outcomes in synergy with those derived from classical pigment assessments.

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“…In this study, we focused the variation of zooplankton community structure observed in different parts of the estuary and the reasonable explanation for their association in the ecosystem. In the same scenario, some earlier studies for zooplankton assemblages through the multivariate methods were well described in some estuarine waters [15,16]. With reference to zooplankton abundance data and species assemblages, it is further discussed the varying pattern of most dominant copepod communities in different environmental settings of Mandovi estuary.…”

Section: Diversity and Community Structurementioning

confidence: 86%

Zooplankton Assemblages in Spatial Stretches of a Tropical Estuary

Das¹

2017

IJRASET

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Present study embodies the spatial variations in zooplankton species dispersal and copepod community structure in the near mouth, away from the mouth, mid estuarine and upstream region of the Mandovi estuary. Overall 35 copepod species were identified in the 4 spatial demarcation of the estuary. Cluster analysis revealed the upstream zooplankton community were remarkably different from the near shore and mid estuarine regions. In the similar conext, upstream water represented Diaptomus sp., Acartiella sp., Heliodiaptomus cinctus and Cyclops sp. abundantly while Paracalanus parvus, Paracalanus aculeatus and Oithona similis were characterising near mouth of the estuary. The mid estuarine location revealed higher abundance of Acrocalanus longicornis and Oithona brevicornis. The SIMPER analysis confirmed the influence of environmental factors on the zooplankton community distribution at a spatial distinction, where Salinity was the maximum contributor (93-94%) in differentiating these environmental settings.

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Multivariate Analysis of Water Quality and Plankton Assemblages in an Urban Estuary

Cited by 26 publications

References 46 publications

Investigating Temporal Variation of Water Quality and Benthic Macroinvertebrates in Taudaha Lake, Kathmandu, Nepal

Investigating Temporal Variation of Water Quality and Benthic Macroinvertebrates in Taudaha Lake, Kathmandu, Nepal

Seston fatty acids to quantify phytoplankton functional groups and their spatiotemporal dynamics in a highly turbid estuary

Zooplankton Assemblages in Spatial Stretches of a Tropical Estuary

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